<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
  </head>

  <body>
    <script>
      const obj = {
        uname: "奉仙",
        age: 18,
        family: {
          baby: "小奉仙",
        },
      };
      // 浅拷贝
      // const o = { ...obj }
      // console.log(o)
      // o.age = 20
      // console.log(o)
      // console.log(obj)
      const o = {};
      Object.assign(o, obj);
      o.age = 21;
      o.family.baby = "老奉仙";
      console.log(o);
      console.log(obj);
    </script>
  </body>
</html>
